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In this photo taken Saturday, April 5, 2014, 2014, United Nations Secretary-General Ban Ki-moon, in a cap, waves at people kept back by a wire fence, as he walks surrounded by U.N. security personnel in a secured location in Bangui, Central African Republic. Ban vowed Saturday that the world would not forget Central African Republic, as he visited the country wracked by sectarian violence that has left thousands dead and forced most of the nation's Muslims to flee. Ban's visit - his first since the bloodshed erupted in December - came just before he goes on to Rwanda to mark the 20th anniversary of the genocide there. (AP Photo/Herve Cyriaque Serefio)